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PEDAL ATTACHMENT EUR EEED oEGANs. No. 361,970r Patented Apr. 26, 1887.

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PEDAL ATTACHMENT FOR REBD'ORGAATS. No. 361,970. Patented Apr. 26,1887.

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LAwRnNoEA. sonnes, or PrioEBUs, VIRGINIA.

.PEDAL ATTAcHMr-:NT FOR REEo-oRGANs.

SPECIFICATION forming part of Letters Patent No. 361,970, dated April26, 1887.

Application filed February '1, 1887. Serial No. 226,734. (No model.) I

To @ZZ whom imay concern.' I

Be it known that'I, LAWRENCE A. SUBERs, a citizen of the United States,and a resident of Phoebus, Elizabeth City county, Virginia, haveinvented certain Improvements in Pedal Attachments fr Organs, ofwhichthe following is a specification.

The object of my invention is to provide a pedal attachment which can beused in connection with any ordinary organ, and which, whilecomparatively inexpensive, will afford the same facilities for pedalpractice as the pedal structure of an expensive organ. This object Iattain in' the manner which I will hereinafter set forth, referencebeing'had to the accompanying drawings, in which-4- Figure 1 is aviewshowing an ordinary forni of reed-organ with mymproved pedal attachment.Fig. 2 is a detached perspective view of the attachment with a portionof the covering removed to show the internal construction. Fig. 3 is alongitudinal section of the attachment on a larger scale than Figs. 1and 2. Fig. 4 is a plan view on the same scale as Fig. 3, but alsohaving a portion of the covering removed to expose the interiorconstruction; and Fig. 5 is a detached sectional view, on an enlargedscale, of part of the attachment.

The fixed frame-work of my improved attachment comprises opposite endbars, and

transverse connecting-bars af', suitably located and properly securedtogether to insure the desired rigidity of said fixed frame. At each endof the rigid frame is an adjustable strip, a, which hasinwardly-projecting tongues c', adapted to suitable guide-openings inthe fixed frame, these adjustable end strips permitting the frame of theattachment to be expanded to suit instruments of different widths inconnection with which the attachment inay have to be used.

In order to close at the front the space between the fixed frame and theend strip, a, when the latter is drawn out, a folding wingstrip, b, ishung to the front end of each strip a, this wing-strip being turned inagainst the end bar of the fixed frame after the adjustable end striphas been withdrawn to the desired extent.

Fig. f1 shows two different adjustments, the movable end strip at oneend ofthe frame being fully withdrawn and that at the other endpartially withdrawn.

Between the reed-board d and the top board, d', at the rear of theattachment is a Vacuum chamber, f, which communicates through lateralpassages f with a vacuumbox, A, the latter being in communicationthrough a tube, B, with the vacuum box or chest C of the organ.

That portion of the pedal structure which contains the vacuum-box A isbeyond the front of the lower portion or box, C', of the organ-case, sothat facilities are afforded for theready attachment of the ends of thetube B to the casing of the pedal structure, and also to the under sideof the projecting vacuumchest C of the organ.

As a means of effecting this attachment, I prefer to use a piece ofrubber tubing, which fits snugly at each end in a central opening in aplate, g, the plates being secured by screws to the casing h of thepedal structure and to the under side of the vacuum-chest C of theorgan, and suitable packing being interposed between the plates andcasings, so that no particular care need be taken in forming the openingin the casing h or'in the under side of the vacuum-chest, the ends ofthe flexible and elastic tubes being slightly compressed in forcing theminto the openings in the plates g, so as to insure the necessary ltightiit.

The action of the regular bellows of the organ` thus provides for themaintenance of a partial vacuum in the chamber f. If desired, thevacuum-box A may extend entirely across the frame of the attachment, andmay communicate with the vacuum-chest of the organ at each end of thelatter, instead of at one end only, as shown.

The reed-board d carries in the present instance two sets ofreed-blocks, F and G, the reeds of one block being of higher power thanthose of the other, and each valvei controls two openings, one for areed of each block. Each reed-block is provided with a stop-valve, m,connected by a suitable rod to a knob, m', conveniently located at thefront of the pedal structure, so that either of these valves may beopened or closed, as the performer may desire. By this means either setof reeds may be used, or both sets may be used together;

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hence the power of the attachment may be so regulated as to harmonizeperfectly with the power of the organ in connection with which theattachment is used.

The pedals H are hung at their front ends to a pivot-rod, n, andareacted upon by springs n', tending to elevate their inner ends, which actupon the levers J, the latter in turn acting upon the valve-pins p. Eachlever J is recessed on its under side for the reception of thepivot-rods, and a spring, t, carried by the lever, bears against this pivotrodand prevents the accidental dctaching of the lever J therefrom, butpermits it 'to be readily detached when occasion requires.

The above described attachment forms a self-contained structure, whichcan be made at small cost, and can be used in connection with anyordinary form of organ, the attachment being simply inserted beneath theorgan, so as to serve as a pedestal or foundation for the latter. Vhenthis has been effected, all that remains to be done in order to renderthe attachment operative is to provide a connection between thevacuum-box of the attachment and the vacuum-chest of the organ, and thiscan be effected in a f'ew moments by means of the devices described, allof the connections being outside of the organ case and readilyaccessible.

I thus construct a cheap attachment, which can be used with any organand which provides the organist with the same facilities for pedalpractice as are now provided by expensive pedal-organs.

I claim as my invention- 1. The combination, in a pedal attachment fororgans, of the fixed frame and adjustable end strips,whereby theattachment is adapted for use with organs of' different widths, allsubstantially as specified.

2. The combination, in a pedal attachment for organs, of the fixedframe, the adjustable end strips, and the folding wing-pieces, allsubstantially as specified.

3. The combination of a reed-organ having the usual vacuum-chest, apedal attachment, also having a vacuum-box, and a pipe or tube locatedoutside of' the organ-casing and forming a communication between thevacuum-box of the attachment and the vacuum-chest of the organ, allsubstantially as specified.

4. rlhe combination of the vacuum-chest of the organ or pedalattachment, the flexible connecting-tube, and a connecting-plate sccuredto the casing of said vacuum-chest and having an opening for thereception of" said tube, all substantially as specified.

In testimony whereof'I have signed my name to this specification in thepresence of two subscribing witnesses.

LAWRENCE A. SUBERS.

Witnesses:

WILLIAM D. CONNER, HARRY SMITH.

